I'm working on making an "Edison bulb" for part of a photo-realistic scene.
The filament is composed of extrusions of a very small cylinder (if that's a poor method, please correct me; I'm very new to modeling) and that seems to have an effect on how bright it can be as an emission surface - whether it's set to 40 or 40,000 it doesn't make a noticeable difference.
The problem is that I can't get the internal reflection on the bulb to show up. Increasing the brightness has no effect. I tried to fake it by duplicating the filament, scaling it up, and making it invisible to the camera but that didn't have the intended effect.
Here's a quick render of the bulb - notice the reflections from outside light sources but none from the internal filament. There's even a bit of reflection from the internal support structures. Similar renders without any other light source have the same problem.
Here's a photograph of a similar bulb with great reflections.
Thanks in advance!